As like as two peas.

The saying describes two people or things that look extremely alike. It emphasizes a conspicuous resemblance, as though they could scarcely be told apart.

It may also be used more broadly for a striking similarity in character, behavior, or design. The comparison suggests near-identity, however, not complete sameness in every respect.

Use it to remark on an especially strong resemblance, often between siblings, relatives, copies, or matching objects. The phrase can be playful or emphatic, but it does not necessarily mean that the two are identical in every respect.